KR102079578B1 - Method and blockchain network for reliability and stability of data anchoring based on multiple signatures - Google Patents

Abstract

The present invention relates to a method for securing reliability and stability of data anchoring between block-chain networks through multiple signatures; and a block-chain network using the same. The method of the present invention comprises the steps of: generating first to n^th anchoring transactions; and registering at least one valid among first to k^th reception anchoring transactions in a second distributed ledger of a second block chain network. Therefore, the anchoring transaction including erroneous data is not registered in a distributed ledger.

Description

METHOD AND BLOCKCHAIN NETWORK FOR RELIABILITY AND STABILITY OF DATA ANCHORING BASED ON MULTIPLE SIGNATURES} Method for securing reliability and stability of data anchoring between blockchain networks through multiple signatures

The present invention relates to a method for securing reliability and stability of data anchoring between blockchain networks through multiple signatures, and a blockchain network using the same.

Anchoring in a blockchain network is to associate a specific blockchain network with another blockchain network, and periodically register hash values of data recorded in the specific blockchain network with other blockchain networks.

Through anchoring of the blockchain network, it is possible to check whether or not forgery of data registered in a specific blockchain network using a hash value registered in another blockchain network, and in particular, data may be collected by internal fixing in a private blockchain network. Attempts to make changes can be prevented.

In the anchoring of such a blockchain network, when an anchoring condition is conventionally, a single single node among nodes constituting a specific blockchain network generates anchoring data and registers the generated anchoring data in another blockchain network.

However, when only a single node of a specific blockchain performs anchoring as in the related art, the following problems typically exist.

That is, when a failure occurs in the single node, there is a problem that all anchoring of data recorded in a specific blockchain is stopped.

In addition, even if the single node generates an anchoring transaction containing invalid data, there is a problem that cannot be prevented.

Therefore, there is a need for a method for improving the above problems existing in existing data anchoring.

US 2019-0081799 A1

The present invention aims to solve all the above-mentioned problems.

Another object of the present invention is to ensure that anchoring is performed by agreement of a plurality of nodes, so that an anchoring transaction containing invalid data is not registered in the distributed ledger.

It is another object of the present invention to solve a single point of failure problem by multiple nodes sending anchoring transactions.

The characteristic constitution of the present invention for achieving the object of the present invention as described above and realizing the characteristic effects of the present invention described below is as follows.

According to an aspect of the present invention, there is provided a method for securing reliability and stability of data anchoring between blockchain networks through multiple signatures, comprising the steps of: (a) transactions are transmitted by nodes constituting a first blockchain network; In the state registered in the first distributed ledger of the blockchain network, if the triggering condition for anchoring is satisfied, (i) the first anchoring node to nth of the nodes, wherein n is an integer of 2 or more. Generate anchoring data corresponding to the transactions, generate a first anchoring transaction to an nth anchoring transaction including at least the anchoring data, or (ii) at least one of the first anchoring node to the nth anchoring node; When the anchoring data is generated by the anchoring node and transmitted to other nodes, the first anchoring node to the first anchoring node. n anchoring step of the node, generating at least the first anchoring transaction to the n-th anchoring transaction including the anchoring data, respectively; And (b) the first and second anchoring nodes transmit the first anchoring transaction and the nth anchoring transaction, respectively, to a multi-sign smart contract registered in a second blockchain network. Allow the contractor to verify the validity of each of the first anchoring transaction received from the first anchoring transaction to the nth anchoring transaction, wherein k is the integer greater than or equal to 1 and less than or equal to n. And when the number determined to be valid among the first receiving anchoring transaction to the kth receiving anchoring transaction satisfies a preset value, at least one valid one of the first receiving anchoring transaction to the kth receiving anchoring transaction is selected from the second blockchain network. 2 registration to the distributed ledger; Disclosed is a method.

As an example, before the step (a), by the manager node (i) the first anchoring node information to the n-th anchoring node information corresponding to each of the first anchoring node to the n-th anchoring node is the second block chain. Registered with the second distributed ledger of the network, (ii) the multi-sig smart contract registered with the second distributed ledger of the second blockchain network, and (iii) the multi-signed smart on the second distributed ledger A multi-sig smart contract address indicating a registration location of the contract is registered in the first distributed ledger of the first blockchain network, and (iv) related information of the multi-sig smart contract is stored in the first blockchain of the first blockchain network. A method is disclosed which is registered with a distributed ledger.

As an example, the first anchoring transaction to the n-th anchoring transaction may further include a first anchoring node certificate to an n-th anchoring node certificate, and in step (b), the first anchoring node to the n-th anchoring node. The node transmits the first anchoring transaction to the nth anchoring transaction to the multi-signal smart contract registered in the second blockchain network, thereby causing the multi-signal smart contract to generate the first received anchoring transaction to the first anchoring transaction. Whether each of the first anchoring node certificate and the k-th anchoring node certificate included in each of the k-th received anchoring transaction matches any one of the first anchoring node information and the n-th anchoring node information registered in the second distributed ledger To confirm the first receiving anchoring transaction to the k-th receiving The method to check the validity of the curled transaction is disclosed.

As an example, the first anchoring transaction to the n-th anchoring transaction may each include a first anchoring node certificate to an n-th anchoring node certificate, and a first anchoring node signature value to sign the anchoring data with the first anchoring node certificate. And an n-th anchoring node signature value for signing the anchoring data with the n-th anchoring node certificate, wherein in step (b), the first anchoring node to the n-th anchoring node, respectively, the first anchoring transaction. And transmitting the n-th anchoring transaction to the multi-sig smart contract registered in the second blockchain network, thereby causing the multi-sig smart contract to generate j-th one of the first receiving anchoring transaction and the k-th receiving anchoring transaction. J is an integer greater than or equal to 1 and less than or equal to k-included in a receive anchoring transaction The first receiving anchoring transaction to the k-th receiving anchoring transaction by confirming that the comparison signature value of signing the anchoring data with the j-th anchoring node certificate matches the j-th anchoring node signature value included in the j-th receiving anchoring transaction. A method for verifying the validity of a is disclosed.

For example, the anchoring data may include a header value of a blockchain block including the transactions generated in response to the triggering condition, and a hash value of a hash operation of network state information of the first blockchain network. Is initiated.

For example, the network state information may include at least one of transaction throughput, network connection information, and authority information of the nodes constituting the first blockchain network including at least the first anchoring node to the nth anchoring node. Disclosed is a method.

As an example, the anchoring data may be leaf nodes including the transactions generated in response to the triggering condition and the processing results of the transactions, and each of the transactions and the processing results corresponding thereto as a sibling node. A method including a root hash value obtained by tree operation or a value obtained by processing the root hash value is disclosed.

According to another aspect of the present invention, in a blockchain network for ensuring reliability and stability of data anchoring between blockchain networks through multiple signatures, a first anchoring node performing anchoring among the nodes constituting the blockchain network N to n, where n is an integer of 2 or more; And a distributed ledger in which transactions are registered by operations of the nodes including the first anchoring node to the nth anchoring node, wherein the first anchoring node to the nth anchoring node comprise the blockchain network. In the state where the transactions are registered in the distributed ledger of the blockchain network by the nodes, if the triggering condition for anchoring is satisfied, (1) (i) generate anchoring data corresponding to each of the transactions, and Generating a first anchoring transaction to an n-th anchoring transaction including at least the anchoring data, or (ii) the anchoring data is generated by at least one anchoring node of the first anchoring node to the n-th anchoring node to generate another; The first anchor, when transmitted to nodes, each including at least the anchoring data A process of generating a currying transaction to the n-th anchoring transaction, and (2) transmitting the first anchoring transaction to the n-th anchoring transaction to a multi-sig smart contract registered to another blockchain network, respectively. Allow a first receiving anchoring transaction received from the first anchoring transaction to the nth anchoring transaction to k, wherein k is an integer greater than or equal to 1 and less than n-to verify the validity of each of the receiving anchoring transactions; If at least one of the anchoring transaction and the k-th receiving anchoring transaction is determined to satisfy a preset value, at least one of the first receiving anchoring transaction and the k-th receiving anchoring transaction is valid to another distributed ledger of the other blockchain network. Register The block chain that a network is disclosed.

As an example, prior to the (1) process, by the manager node, (i) the first anchoring node information to the nth anchoring node information corresponding to each of the first anchoring node to the nth anchoring node are stored in the other blockchain network. Registered in the other distributed ledger of (ii) the multi-sig smart contract is registered in the other distributed ledger of the other blockchain network, and (iii) registers the registered location of the multi-sig smart contract on the other distributed ledger. A block chain network, wherein the multi-sig smart contract address is registered in the distributed ledger of the blockchain network, and (iv) the relevant information of the multi-sign smart contract is registered in the distributed ledger of the blockchain network. Is initiated.

As an example, the first anchoring transaction to the n-th anchoring transaction may further include a first anchoring node certificate to an n-th anchoring node certificate, and the first anchoring node to the n-th anchoring node may be the (2) In the process, by sending the first anchoring transaction to the n-th anchoring transaction to the multi-sig smart contract registered in the other blockchain network, respectively, the multi-sig smart contract, the first receiving anchoring transaction to the first confirm whether each of the first anchoring node certificate and the k-th anchoring node certificate included in each of the k-th received anchoring transactions matches any one of the first anchoring node information and the n-th anchoring node information registered in the other distributed ledger. The first receiving anchoring transaction to the kth number The block chain network, characterized in that to determine the effectiveness of the anchoring transaction is disclosed.

As an example, the first anchoring transaction to the n-th anchoring transaction may each include a first anchoring node certificate to an n-th anchoring node certificate, and a first anchoring node signature value to sign the anchoring data with the first anchoring node certificate. And an n-th anchoring node signature value that signed the anchoring data with the n-th anchoring node certificate, wherein the first anchoring node to the n-th anchoring node, in the process (2), each of the first anchoring transaction. And transmitting the n-th anchoring transaction to the multi-sig smart contract registered in the other blockchain network, thereby causing the multi-sig smart contract to generate the j-th of the first receiving anchoring transaction to the k-th receiving anchoring transaction. j is an integer greater than or equal to 1 and less than or equal to k-included in the receiving anchoring transaction The first receiving anchoring transaction to the k-th receiving anchoring by confirming that the comparison signature value of signing the anchoring data with the j-th anchoring node certificate coincides with the j-th anchoring node signature value included in the j-th receiving anchoring transaction. A blockchain network is disclosed that allows for validating a transaction.

For example, the anchoring data may include header information of a blockchain block including the transactions generated in response to the triggering condition, and a hash value of a hash operation of network state information of the blockchain network. The blockchain network is disclosed.

As an example, the network state information includes at least one of transaction throughput, network connection information, and authorization information of the nodes constituting the blockchain network including at least the first anchoring node to the nth anchoring node. A blockchain network is disclosed.

As an example, the anchoring data may be leaf nodes including the transactions generated in response to the triggering condition and the processing results of the transactions, and each of the transactions and the processing results corresponding thereto as a sibling node. A blockchain network is disclosed that includes a tree hash root value or a value obtained by processing the root hash value.

According to the present invention, the following effects are obtained.

According to the present invention, anchoring is performed by consensus of a plurality of nodes, thereby preventing an anchoring transaction containing wrong data from being registered in the distributed ledger.

In addition, the present invention has the effect of solving a single point of failure problem by multiple nodes sending an anchoring transaction.

FIG. 1 schematically illustrates the overall configuration of a blockchain network to ensure reliability and stability of data anchoring between blockchain networks through multiple signatures according to an embodiment of the present invention.
FIG. 2 schematically illustrates the configuration of individual nodes in a blockchain network to ensure reliability and stability of data anchoring between blockchain networks through multiple signatures according to an embodiment of the present invention.
FIG. 3 schematically illustrates a process of registering a multi-sig smart contract and corresponding information in a method for securing reliability and stability of data anchoring between blockchain networks through multiple signatures according to an embodiment of the present invention. Will,
4 is a diagram illustrating an anchoring transaction generated in a first blockchain network in a second blockchain network in a method for securing reliability and stability of data anchoring between blockchain networks through multiple signatures according to an embodiment of the present invention. The process is shown schematically.

DETAILED DESCRIPTION OF THE INVENTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. It will be readily apparent to one skilled in the art that the method of the present invention will be implemented utilizing a combination of computer hardware and software.

FIG. 1 schematically illustrates the overall configuration of a blockchain network for securing reliability and stability of data anchoring between blockchain networks through multiple signatures according to an embodiment of the present invention. Referring to FIG. It may include a blockchain network 100 and a second blockchain network 200.

First, the first blockchain network 100 includes a plurality of nodes 100-1 to 100-p including at least first anchoring nodes 100-1 to n-th anchoring nodes 100-n. The transactions may be registered in the first distributed ledger by a distributed agreement of the nodes 100-1 through 100-n. In this case, n and p may be an integer of 2 or more, and p may be an integer of n or more.

The first anchoring node 100-1 to the n-th anchoring node 100-n is in a state in which transactions are registered in the first distributed ledger by a distributed agreement of the nodes 100-1 to 100 -p. When the triggering condition for anchoring is satisfied, the anchoring data is generated, the anchoring data is transmitted to the second blockchain network 200, and the multi-signal smart contract 210 registered in the second blockchain network 200 is anchored. The data can be registered in the second distributed ledger.

Meanwhile, referring to FIG. 2, the nodes 100-1 through 100-p of the first blockchain network 100 are each a computing device 10 including at least a memory 10 and a processor 12. Can be.

In this case, the memory 11 of the computing device 10 may store instructions, specifically, the instructions may cause the nodes 100-1 to 100-p of the first blockchain network 100 to operate in a particular manner. As computer software for functioning, it can be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment. The instructions are also capable of performing processes for performing the functions shown in the figures.

In addition, the processor 12 of the computing device 10 may include a hardware configuration such as a micro processing unit (MPU) or a central processing unit (CPU), a cache memory, a data bus, and the like. In addition, the operating system may further include a software configuration of an application performing a specific purpose.

Next, the second blockchain network 200 may be composed of a plurality of nodes 200-1 to 200-m, and multi-sig smart by the distributed agreement of the nodes 200-1 to 200-m. The contract 210 and other transactions may be registered with the second distributed ledger. In this case, m may be an integer of 1 or more.

In addition, the multi-signal smart contract 210 may determine that anchoring transactions transmitted from the first anchoring node 100-1 to the n-th anchoring node 100-n of the first blockchain network 100 match a predetermined condition. The anchoring data corresponding to the transactions of the first blockchain network 100 may be registered in the second distributed ledger of the second blockchain network 200.

Meanwhile, the nodes 200-1 to 200-m of the second blockchain network 200 may each be a computing device including at least a memory and a processor.

At this time, the memory of the computing device may store instructions, specifically, the instructions are computer software for causing the nodes 200-1 to 200-m of the second blockchain network 200 to function in a particular manner. And can be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment.

In addition, the processor of the computing device may include a hardware configuration such as a micro processing unit (MPU) or a central processing unit (CPU), a cache memory, a data bus, and the like. In addition, the operating system may further include a software configuration of an application performing a specific purpose.

For reference, FIG. 1 shows nodes 100-1 to 100-p of the first blockchain network 100 and nodes 200-1 to 200-m of the second blockchain network 200, respectively. Although illustrated one by one, it is not limited thereto. The same reference numerals are used for the convenience of description and are not intended to mean that these individual devices are the same.

Meanwhile, the first blockchain network 100 may be a private blockchain network, and the second blockchain network 200 may be a public blockchain network. That is, the first blockchain network 100, which is a private blockchain network, anchors data to the second blockchain network 200, which is a public blockchain network, thereby preventing forgery and alteration of data registered in the private blockchain network. .

However, the type of the first blockchain network 100 is not limited to the private blockchain network, and likewise, the second blockchain network 200 is not limited to the public blockchain network.

For example, both the first blockchain network 100 and the second blockchain network 200 may be public blockchain networks.

For example, both the first blockchain network 100 and the second blockchain network 200 may be private blockchain networks.

For example, the first blockchain network 100 may be a public blockchain network, and the second blockchain network 200 may be a private blockchain network. As a specific example, when the second blockchain network 200 is a private blockchain network formed by a publicly trusted entity, the first blockchain network 100 anchors data to the second blockchain network 200 so that public trust is achieved. It can be regarded as receiving some kind of accreditation from the relevant organization.

Multiple signatures by the nodes 100-1 to 100-p of the first blockchain network 100 and the nodes 200-1 to 200-m of the second blockchain network 200 having such a structure The method for securing the reliability and stability of data anchoring between blockchain networks is as follows.

FIG. 3 illustrates a multi-sig smart contract 210 and various data corresponding to the first distributed ledger of the first blockchain network 100 and the second distributed ledger of the second blockchain network 200. Figures schematically show the flow registered in each.

First, the first anchoring node 100-1 to the n-th anchoring node in which the manager node 300 performs anchoring among the nodes 100-1 to 100-p constituting the first blockchain network 100. When the registration request for each of the first anchoring node information to the nth anchoring node information corresponding to each of the (100-n) is transmitted to the second blockchain network 200, the node constituting the second blockchain network 200 At least one of the nodes 200-1 to 200-m may register each of the first anchoring node information to the nth anchoring node information in the second distributed ledger (S1). N is an integer of 2 or more.

At this time, a first corresponding to each of the first anchoring node 100-1 to the n-th anchoring node 100-n among the nodes 100-1 to 100-p constituting the first blockchain network 100 Each of the anchoring node information to the n-th anchoring node information may include anchoring to the second distributed ledger of the second blockchain network 200 by each of the first anchoring node 100-1 to the n-th anchoring node 100-n. It may include information indicating whether the user has permission to do so. Each of the first anchoring node information to the n-th anchoring node information may include a first anchoring node certificate and an n-th anchoring node certificate corresponding to each of the first anchoring node 100-1 to the n-th anchoring node 100-n. It may include. In this case, each of the first anchoring node certificate to the n-th anchoring node certificate may include a public key of each of the first anchoring node 100-1 to the n-th anchoring node 100-n.

When the manager node 300 transmits a registration request for the multi-sig smart contract 210 to the second blockchain network 200, the nodes 200-1 constituting the second blockchain network 200. To 200-m) at least one node may register the multi-signal smart contract 210 with the second distributed ledger (S2). Thereafter, the manager node 300 may obtain a multi-sign smart contract address indicating a location where the multi-sign multi smart contract is registered on the second distributed ledger from the second blockchain network 200.

In this case, the multi-sign smart contract 210 may be a smart contract configured to require multiple signatures to generate a specific transaction, unlike to require one signature to generate an arbitrary transaction. That is, the multi-sign smart contract 210 may be registered in the second distributed ledger of the second blockchain network 200 as a smart contract subject to multiple signatures.

In addition, the manager node 300 receives a multi-sig smart contract address indicating a location where the multi-sig smart contract 210 registered in the second distributed ledger is registered in the second distributed ledger of the second blockchain network 200. The first blockchain network 100 is transmitted to the first anchoring node to the nth anchoring node of the first blockchain network 100 (S3). In this case, the manager node 300 may further transmit multi-sign contact information together with the multi-sign contract address (S4). In this case, the multi-sign contract related information may include proprietary asset information corresponding to the second blockchain network 200 cryptocurrency used for transaction registration.

As described above, the first anchoring node information to the nth anchoring node information of the first blockchain network 100 and the multi-signal smart contract 210 are registered in the second distributed ledger of the second blockchain network 200. The data anchoring process is performed in a state in which the first to n-th anchoring nodes of the first blockchain network 100 obtain the multi-sig smart contract address and the related information of the multi-sig smart contract with reference to FIG. 4. The explanation is as follows.

First, in a state where transactions are registered in the first distributed ledger of the first blockchain network by the nodes 100-1 to 100-p constituting the first blockchain network, when a triggering condition for anchoring is satisfied ( S5), the first anchoring node 100-1 to the n-th anchoring node 100-n respectively generate anchoring data corresponding to the transactions, and each of the first anchoring transaction to n-th anchoring includes at least anchoring data. Create a transaction.

At this time, unlike the first anchoring node 100-1 to the n-th anchoring node 100-n respectively generating anchoring data, the first anchoring node 100-1 to the n-th anchoring node 100-n is different. Any one of the anchoring nodes generates anchoring data corresponding to the transactions, and transmits the generated anchoring data to the other anchoring nodes, whereby the first anchoring node 100-1 to the n-th anchoring node 100-n ) May generate a first anchoring transaction to an nth anchoring transaction, each including at least anchoring data.

The triggering condition may include at least one of a condition in which a transaction is generated by a predetermined number, a condition in which a predetermined time elapses, a condition in which a block chain block is generated in the first blockchain network, and a condition for a service characteristic. .

The anchoring data may include a header value of the blockchain block and a hash value of a hash operation of network state information of the first blockchain network.

For example, the header information of the blockchain block includes transaction information generated in response to the triggering condition, and the header information of the blockchain block may include information about the block and the number of details of a transaction. In addition, information corresponding to characteristics of the first blockchain network may be included. If the first blockchain network is a hyperleisure fabric, header information of the block may include information on an orderer and a peer.

In addition, the network state information may include information about the nodes 100-1 to 100-p constituting the first blockchain network including at least the first anchoring node 100-1 to the nth anchoring node 100-n. It may include at least one of transaction throughput, network connection information and authorization information. For example, the network state information may include information about how many transactions each node of the first blockchain network is currently processing.

For example, if a node has a peer, an orderer, and an endorser, these nodes may belong to an organization. In other words, Peer 1 and Peer 2 belong to Organization A, Peer 3 and Peer 4 belong to Organization B, and Orderer 1, Orderer 2, and Orderer 3 may belong to Orderer Organization.

In addition, only the nodes belonging to the same channel can share and execute the blockchain contents, and the smart contract state installed for each node may be different. That is, Peer 2 and Peer 3 may belong to Channel a, and Peer 4 and Peer 2 may belong to Channel b.

At this time, the network state data may be as follows.

{

"organization": {

"gameper": ["peer1", "peer2"],

"some_company": ["peer3", "peer4"]

},

"leader": {

"gameper": ["peer1"],

"some_company": ["peer3"]

},

"channel": {

"channel_a": ["peer1", "peer4"],

"channel_b": ["peer2", "peer3"]

},

"status": {

"peer1": "on",

"peer2": "off",

"peer3": "on",

"peer4": "on",

},

"installed_smart_contract": {

"peer1": ["insurance"],

"peer2": ["cashwalk"],

"peer3": ["cashwalk"],

"peer4": ["insurance"]

}

}

In addition, the anchoring data is a leaf node using transactions generated in response to the triggering condition and the processing results of the transactions as leaf nodes, and a root of the Merkle tree operation using each of the transactions and the processing results corresponding thereto as sibling nodes. The hash value or the root hash value may be processed.

For example, an odd numbered leaf corresponds to a value indicating whether a specific transaction succeeds or fails, an even numbered leaf corresponds to a hash value of a hash operation of a specific transaction, and an odd numbered leaf and an even numbered leaf are sibling nodes. By using the Merkle tree, you can check whether a particular transaction succeeds or fails. Here, 0 or 1 may be used as a value indicating whether the corresponding transaction is successful or failed, but is not limited thereto.

As another example, the leaf node of the Merkle tree may generate a hash value by hashing only the transaction content itself regardless of whether the transaction succeeds or fails, and may include the hash value as leaf data of the Merkle tree.

Next, the first anchoring node 100-1 to the n-th anchoring node 100-n transmits the first anchoring transaction to the n-th anchoring transaction to the second blockchain network, respectively (S6, S8, and S10). ).

In this case, each of the first anchoring node 100-1 to the n-th anchoring node 100-n designates a multi-signal smart contract address as a destination of the first anchoring transaction to the n-th anchoring transaction, thereby providing the first anchoring transaction or the like. The nth anchoring transaction is transmitted to the multi-sign smart contract registered in the second distributed ledger of the second blockchain network.

Then, the multi-signal smart contract is executed, and accordingly, the multi-signal smart contract checks the validity of each of the first receiving anchoring transaction and the k-th receiving anchoring transaction received during the first anchoring transaction to the nth anchoring transaction (S7). (S9, S11), when the number of the first receiving anchoring transaction to the k-th receiving anchoring transaction that is determined to be valid satisfies a preset value (S12), at least one valid one of the first receiving anchoring transaction to the k-th receiving anchoring transaction is determined. It is possible to register with the second distributed ledger of the two blockchain network (S13). Here k is an integer greater than or equal to 1 and less than or equal to n.

In this case, only the anchoring nodes having anchoring authority may transmit the anchoring transaction and check the validity of the received anchoring transaction. However, the present invention is not limited thereto, and the anchoring node receives the anchoring transaction from the node without the anchoring authority and validates the corresponding anchoring transaction. You can also check.

For example, 15 nodes among 20 total nodes constituting the first blockchain network may transmit anchoring transactions to multi-sig smart contracts registered in the second blockchain network. And, among the 15 anchoring transactions, there may be 12 anchoring transactions actually received. In addition, as a result of checking the validity of each of the received anchoring transactions by the multi-sign smart contract, there may be zero anchoring transactions that are found to be valid. In this case, none of the received anchoring transactions may be registered in the second distributed ledger of the second blockchain network 200.

Here, the condition for confirming that the anchoring transaction is valid may include a condition in which the anchoring transaction is generated and transmitted from a node having an anchoring authority.

Meanwhile, the number of anchoring transactions transmitted from the node of the first blockchain network and the number of anchoring transactions received by the multi-sig smart contract may be different as described above, but the present invention is not limited thereto. May be the same. The reason why the number of anchoring transactions is different from the number of transmissions of the anchoring transaction may be a connection state between the first blockchain network and the second blockchain network.

As another example, there are actually 12 anchoring transactions received, and the multi-sig smart contract has 3 valid anchoring transactions as a result of validating each of the received anchoring transactions. However, if the predetermined value to be satisfied for the anchoring is 5, the number of anchoring transactions that are found to be valid is less than 5, so the multi-signal smart contract is able to distribute any anchoring transactions to the second distribution of the second blockchain network. May not register with the ledger.

As another example, there may be ten anchoring transactions actually received and nine anchoring transactions that are confirmed to be valid as a result of the multi-sign smart contract being validated for each of the received anchoring transactions. In addition, when the preset value is 6 for anchoring, the number of anchoring transactions that are found to be valid is 6 or more, thereby satisfying the preset value. Accordingly, the first to nth nodes may allow the multi-sign smart contract to register at least one of the nine anchoring transactions that are found to be valid to the second distributed ledger of the second blockchain network.

In this case, the preset value for anchoring may be the number of anchoring transactions that are found to be valid, but is not limited thereto and may have a variable value according to the number of nodes having the authority to anchor. For example, the preset value for anchoring is required to correspond to two-thirds or more of the number of nodes 100-1 to 100-p having the authority to anchor in the first blockchain network. It may be a value.

Meanwhile, each of the first anchoring transaction to the n-th anchoring transaction may further include a first anchoring node certificate to an n-th anchoring node certificate.

In this case, the first anchoring node 100-1 to the n-th anchoring node 100-n respectively transmits the first anchoring transaction to the n-th anchoring transaction to the multi-sig smart contract registered in the second blockchain network. The multi-signal smart contract allows each of the first anchoring node certificate and the k-th anchoring node certificate included in each of the first receiving anchoring transaction and the k-th receiving anchoring transaction to each of the first anchoring node information registered in the second distributed ledger. It is possible to confirm which one of the n-th anchoring node information matches, so as to confirm the validity of the first receiving anchoring transaction to the k-th receiving anchoring transaction.

That is, the first anchoring node 100-1 to the n-th anchoring node 100-n allow the multi-signal smart contract to include each anchoring node certificate included in each of the received anchoring transactions and the second block chain. It is possible to confirm whether the anchoring node information registered in the second distributed ledger of the network is matched to confirm the validity of the received anchoring transaction.

On the other hand, the first anchoring transaction to the n-th anchoring transaction, respectively, the first anchoring node certificate to the n-th anchoring node certificate, and the first anchoring node signature value to the n-th anchoring node certificate that signed the anchoring data with the first anchoring node certificate It may further include an n-th anchoring node signature value that signed the anchoring data.

In this case, the multi-signal smart contract in which the first anchoring node 100-1 to the n-th anchoring node 100-n registers the first anchoring transaction to the n-th anchoring transaction in the second blockchain network 200, respectively. The multi-signal smart contract is sent to the jig. J-th anchoring transaction, wherein j-j is an integer greater than or equal to 1 and less than or equal to k-anchoring data with the j-th anchoring node certificate included in the receiving anchoring transaction. The signed comparison signature value may be checked to match the j-th anchoring node signature value included in the j-th reception anchoring transaction to verify the validity of the first to k-th anchoring transaction.

Meanwhile, some anchoring nodes of the first anchoring node 100-1 to the n-th anchoring node 100-n may fail to transmit an anchoring transaction to the multi-sig smart contract. As such, when a failure situation occurs in a specific node, the specific node may transmit the anchoring transaction to the external server so that the external server may transmit the anchoring transaction to the multi-sign smart contract.

Embodiments according to the present invention described above can be implemented in the form of program instructions that can be executed by various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the computer-readable recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, and magneto-optical media such as floptical disks. media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

Although the present invention has been described by specific embodiments, such as specific components and the like, and the drawings, it is provided to help a more general understanding of the present invention, but the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations can be made from such a description.

Therefore, the spirit of the present invention should not be limited to the embodiments described above, and all of the equivalents or equivalents of the claims, as well as the claims below, are included in the scope of the spirit of the present invention. I will say.

Claims (14)

In the method for ensuring the reliability and stability of data anchoring between blockchain networks through multiple signatures,
(a) When transactions are registered in the first distributed ledger of the first blockchain network by nodes constituting the first blockchain network, if a triggering condition for anchoring is satisfied, (i) one of the nodes First anchoring node to n-th, wherein n is an integer greater than or equal to 2-the anchoring node generates anchoring data corresponding to the transactions, respectively, and generates a first anchoring transaction to an n-th anchoring transaction including at least the anchoring data Or (ii) when the anchoring data is generated by the at least one anchoring node of the first anchoring node to the n-th anchoring node and transmitted to other nodes, the first anchoring node to the n-th anchoring node, Generating the first to nth anchoring transactions, each including at least the anchoring data; ; And
(b) the multi-signal smart contract by transmitting the first anchoring transaction to the n-th anchoring node to a multi-sign smart contract registered in a second blockchain network, respectively. Allow a first receiving anchoring transaction received from the first anchoring transaction to the nth anchoring transaction to k, wherein k is an integer greater than or equal to 1 and less than or equal to n, and confirms validity of each of the receiving anchoring transactions. If the number of the received anchoring transaction to the k-th receiving anchoring transaction that is determined to be valid satisfies a predetermined value, at least one valid one of the first receiving anchoring transaction to the k-th receiving anchoring transaction is determined to be the second of the second blockchain network. Registering with the distributed ledger;
How to include. The method of claim 1,
Before step (a) above,
(I) first anchoring node information to n-th anchoring node information corresponding to each of the first anchoring node to the nth anchoring node are registered by the manager node in the second distributed ledger of the second blockchain network, (ii) the multi-sig smart contract address is registered with the second distributed ledger of the second blockchain network, and (iii) a multi-sig smart contract address indicating a registration location of the multi-sig smart contract on the second distributed ledger. Is registered in the first distributed ledger of the first blockchain network, and (iv) the relevant information of the multi-sign smart contract is registered in the first distributed ledger of the first blockchain network. The method of claim 2,
The first anchoring transaction to the n-th anchoring transaction further include a first anchoring node certificate to an n-th anchoring node certificate,
In step (b),
The first anchoring node to the n-th anchoring node transmits the first anchoring transaction to the n-th anchoring transaction to the multi-sig smart contract registered to the second blockchain network, respectively. Each of the first anchoring node certificate and the k-th anchoring node certificate included in each of the first receiving anchoring transaction and the k-th receiving anchoring transaction includes the first anchoring node information and the first registration information registered in the second distributed ledger. n Confirming which one of the anchoring node information is matched to verify the validity of the first receiving anchoring transaction to the k-th receiving anchoring transaction. The method of claim 1,
Each of the first anchoring transaction to the nth anchoring transaction may include a first anchoring node certificate to an nth anchoring node certificate, and a first anchoring node signature value to the nth anchoring data signed by the first anchoring node certificate. And an n-th anchoring node signature value that signed the anchoring data with an anchoring node certificate.
In step (b),
The first anchoring node to the n-th anchoring node transmits the first anchoring transaction to the n-th anchoring transaction to the multi-sig smart contract registered to the second blockchain network, respectively. A comparison signature of signing the anchoring data with the j-th anchoring node certificate included in the j-th receiving anchoring transaction, wherein j is the integer greater than or equal to 1 and less than k. Verifying a value matches a j-th anchoring node signature value included in the j-th receiving anchoring transaction to validate the first to k-th receiving anchoring transaction. The method of claim 1,
The anchoring data includes a header value of a blockchain block including the transactions generated corresponding to the triggering condition, and a hash value of a hash operation of network state information of the first blockchain network. The method of claim 5,
The network state information includes at least one of transaction throughput, network connection information, and authority information of the nodes constituting the first blockchain network including at least the first anchoring node to the nth anchoring node. . The method of claim 1,
The anchoring data includes leaf nodes based on the transactions and the processing results of the transactions generated in response to the triggering condition, and a Merkle tree operation based on each of the transactions and the processing results corresponding thereto as sibling nodes. A root hash value or a value obtained by processing the root hash value. In a blockchain network to secure the reliability and stability of data anchoring between blockchain networks through multiple signatures,
A first anchoring node performing anchoring among nodes constituting the blockchain network, wherein n is an integer of 2 or more; And
A distributed ledger in which transactions are registered by operations of the nodes including the first anchoring node to the nth anchoring node,
The first anchoring node to the n-th anchoring node,
In the state where the transactions are registered in the distributed ledger of the blockchain network by the nodes constituting the blockchain network, if a triggering condition for anchoring is satisfied, (1) (i) respectively correspond to the transactions. Generating anchoring data, and generating a first anchoring transaction to an nth anchoring transaction including at least the anchoring data, or (ii) by at least one anchoring node of the first anchoring node to the nth anchoring node; When the anchoring data is generated and transmitted to the other nodes, a process for generating the first anchoring transaction to the nth anchoring transaction, each comprising at least the anchoring data, and (2) the first anchoring transaction to the nth anchoring respectively; Multi sig smart registered in other blockchain network Transmitting to the tract causes the multi-signal smart contract to receive from the first anchoring transaction to the nth anchoring transaction, the first receiving anchoring transaction to k-where k is an integer greater than or equal to 1 and less than n, respectively. At least one of the first receiving anchoring transaction and the k-th receiving anchoring transaction when the number of the first receiving anchoring transaction to the k-th receiving anchoring transaction satisfies a predetermined value. A blockchain network to register the data with another distributed ledger of the other blockchain network. The method of claim 8,
Before the above (1) process,
(I) first anchoring node information to nth anchoring node information corresponding to each of the first anchoring node to the nth anchoring node are registered by the manager node in the other distributed ledger of the other blockchain network, and (ii The multi-signal smart contract is registered with the other distributed ledger of the other blockchain network, and (iii) the multi-signal smart contract address indicating the registration location of the multi-signal smart contract on the other distributed ledger is the blockchain network. And (iv) the relevant information of the multi-sign smart contract is registered in the distributed ledger of the blockchain network. The method of claim 9,
The first anchoring transaction to the n-th anchoring transaction further include a first anchoring node certificate to an n-th anchoring node certificate,
The first anchoring node to the n-th anchoring node,
In the above (2) process,
Respectively transmitting the first anchoring transaction to the nth anchoring transaction to the multi-signal smart contract registered in the other blockchain network, thereby causing the multi-signal smart contract to perform the first receiving anchoring transaction to the k-th receiving anchoring. Wherein each of the first anchoring node certificate and the k-th anchoring node certificate included in each transaction matches any one of the first anchoring node information and the n-th anchoring node information registered in the other distributed ledger, A blockchain network, characterized in that to confirm the validity of the first receiving anchoring transaction to the k-th receiving anchoring transaction. The method of claim 8,
Each of the first anchoring transaction to the nth anchoring transaction may include a first anchoring node certificate to an nth anchoring node certificate, and a first anchoring node signature value to the nth anchoring data signed by the first anchoring node certificate. And an n-th anchoring node signature value that signed the anchoring data with an anchoring node certificate.
The first anchoring node to the n-th anchoring node,
In the above (2) process,
Respectively transmitting the first anchoring transaction to the nth anchoring transaction to the multi-signal smart contract registered in the other blockchain network, thereby causing the multi-signal smart contract to perform the first receiving anchoring transaction to the k-th receiving anchoring. J j of the transaction-j is an integer greater than or equal to 1 and less than k-j anchoring included in the j j anchoring transaction with a comparison signature value that signed the anchoring data with a j anchoring node certificate included in a receive anchoring transaction And confirming whether the node signature value matches the node signature value so as to confirm the validity of the first receiving anchoring transaction to the k-th receiving anchoring transaction. The method of claim 8,
The anchoring data may include a header information of a blockchain block including the transactions generated in response to the triggering condition and a hash value of a hash operation of network state information of the blockchain network. . The method of claim 12,
The network state information may include at least one of transaction throughput, network connection information, and authority information of the nodes constituting the blockchain network including at least the first anchoring node to the nth anchoring node. Blockchain network. The method of claim 8,
The anchoring data includes leaf nodes based on the transactions and the processing results of the transactions generated in response to the triggering condition, and a Merkle tree operation based on each of the transactions and the processing results corresponding thereto as sibling nodes. A block chain network comprising a root hash value or a value obtained by processing the root hash value.

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